The "Get Damage" button indicates the severity of the damage done. To determine if damage is done you must first find out some other way. This can be done either with the "Get Answer" buttons or by whatever system you are using.

By default the button will let you know the injury level for a living creature. However, just below the "Get Damage" button is a check box named "Mechanical Damage" that, when selected, will tell you the severity done to an object.

To the right of the "Get Damage" button is a text box where you can enter a modifier to the results. So if you are an elven archer and you feel that you should get a bonus for your skill level, you can put a number there that gets added to the results. So you might put a 1 or a 2.

However, if you are a space engineer who has never fired a weapon and you must shoot the laser riffle, you might put a -3.

The results are determined with a roll of [1d20]. Injury levels are as follows: